Quick Answer
Calculate Gaussian Plume Ground-Level Concentration (AERMOD Simplified)
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Find Engineering Solutions →Result Interpretation
Gaussian Plume Ground-Level Concentration (AERMOD Simplified) calculator computes Ground-Level Concentration in g/m^3 using the defined engineering formula and the input values provided. Ground-Level Concentration is expressed in g/m^3. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Pollutant Emission Rate = 5
- Wind Speed at Stack Height = 2.5
- Horizontal Dispersion Coefficient = 100
- Vertical Dispersion Coefficient = 60
- Effective Stack Height = 80
Expected Result:
- Ground-Level Concentration = 0.000221071
Engineering Interpretation:
Under the given input conditions, the calculated result is: Ground-Level Concentration = 0.000221071 g/m^3.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
ground-level concentration = (pollutant emission rate / (2 * 3.14159265358979 * wind speed at stack height * horizontal dispersion coefficient * vertical dispersion coefficient)) * exp(-0.5 * pow(effective stack height / vertical dispersion coefficient, 2))Formula family: formula_environmental_atmospheric_dispersion_modeling_calculator_gaussian_plume_aermod_simplified
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| emission_rate | Pollutant Emission Rate | INPUT | Pollutant Emission Rate |
| wind_speed | Wind Speed at Stack Height | INPUT | Wind Speed at Stack Height |
| horizontal_dispersion | Horizontal Dispersion Coefficient | INPUT | Horizontal Dispersion Coefficient |
| vertical_dispersion | Vertical Dispersion Coefficient | INPUT | Vertical Dispersion Coefficient |
| stack_height | Effective Stack Height | INPUT | Effective Stack Height |
| ground_level_concentration | Ground-Level Concentration | OUTPUT | Ground-Level Concentration |
Calculation Steps
- Enter the pollutant emission rate in g/s.
- Enter the wind speed at stack height in m/s.
- Enter the horizontal dispersion coefficient in m.
- Enter the vertical dispersion coefficient in m.
- Enter the effective stack height in m.
- Step 1: Compute ground-level concentration.
- Read the ground-level concentration (g/m^3) from the results.
Engineering Summary
Calculate Gaussian Plume Ground-Level Concentration (AERMOD Simplified)
Frequently Asked Questions
What does this calculator calculate?
The Gaussian Plume Ground-Level Concentration (AERMOD Simplified) calculator estimates Ground-Level Concentration based on the input parameters you provide
Why is pollutant emission rate important in this calculation?
pollutant emission rate is directly proportional to ground-level concentration. When you enter pollutant emission rate in g/s, the calculator uses it in the engineering formula to compute the output
How should I interpret the result ground-level concentration?
The calculator outputs ground-level concentration in g/m^3. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Pollutant Emission Rate (g/s), Wind Speed at Stack Height (m/s), Horizontal Dispersion Coefficient (m), Vertical Dispersion Coefficient (m), Effective Stack Height (m). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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